Feels arbitrary. You don't group oil painting with mechanical engineering why group Math with Beauty? This isko organization... if they do indeed follow pierce

Feels arbitrary. You don't group oil painting with mechanical engineering why group Math with Beauty? This isko organization... if they do indeed follow pierce is incredibly strange. Case in point: https://www.isko.org/cyclo/peirce1.jpg https://www.isko.org/cyclo/peirce1.jpg Philosophy is under mathematics which is not under logic? Philosophy is like literature it is entirely a separate category and logic isn't even mentioned in his arbitrary grouping.